/Engine/Source/Runtime/ApplicationCore/Public/GenericPlatform/Accessibility/GenericAccessibleInterfaces.h
Retrieves the accessible child widget at a certain index. This should return nullptr ifIndex< 0 orIndex>=GetNumberOfChildren().
The accessible child widget at the specified index.
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IAccessibleWidget](API\Runtime\ApplicationCore\GenericPlatform\Accessibility\IAccessibleWidget) > GetChildAt ( int32 Index )